chore(release): publish [skip ci]

- @ohif/extension-cornerstone@1.2.1
 - @ohif/extension-vtk@0.50.14
 - @ohif/core@0.50.9
 - @ohif/viewer@1.1.5

extensions/cornerstone/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@ohif/extension-cornerstone",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "description": "OHIF extension for Cornerstone",
   "author": "OHIF",
   "license": "MIT",